The numbers and letters on a needle pack tell you three things: the system (whether it fits your machine), the needle type, and the size. Most domestic machines use system 130/705 H, which has a flat-sided shank and fits the vast majority of household sewing machines. The letters (for example MIC, SUK, J) show the needle type and the fabrics or tasks it’s designed for – such as Microtex/sharp for tightly woven fabrics, ballpoint for knits, or jeans for denim. The numbers (such as 80/12, 90/14) show the thickness of the needle in two sizing systems; higher numbers mean a thicker needle, suitable for heavier fabrics and threads.
Need a quick reference? Download our needle guide leaflet for an at‑a‑glance overview of types and sizes.” - click here.